EP0019633A1 - Pompe à piston du type axial - Google Patents

Pompe à piston du type axial Download PDF

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Publication number
EP0019633A1
EP0019633A1 EP79900553A EP79900553A EP0019633A1 EP 0019633 A1 EP0019633 A1 EP 0019633A1 EP 79900553 A EP79900553 A EP 79900553A EP 79900553 A EP79900553 A EP 79900553A EP 0019633 A1 EP0019633 A1 EP 0019633A1
Authority
EP
European Patent Office
Prior art keywords
flywheel
piston pump
driving shaft
axial type
rotary piston
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP79900553A
Other languages
German (de)
English (en)
Other versions
EP0019633A4 (fr
EP0019633B1 (fr
Inventor
Toshio Hosokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7097378A external-priority patent/JPS54163405A/ja
Priority claimed from JP306779A external-priority patent/JPS5596375A/ja
Application filed by Individual filed Critical Individual
Publication of EP0019633A4 publication Critical patent/EP0019633A4/fr
Publication of EP0019633A1 publication Critical patent/EP0019633A1/fr
Application granted granted Critical
Publication of EP0019633B1 publication Critical patent/EP0019633B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18336—Wabbler type

Definitions

  • the present invention relates to a rotary piston pump, more particularly to a rotary piston pump of axial type.
  • rotary piston pumps of radial type in which the pistons are arranged vertically to the driving shaft and of axial type in which the pistons are arranged in parallel with the driving shaft, each of said two types having further been either of rotatable cylinder or of fixed cylinder.
  • the present invention relates to a novel rotary piston pump of axial type with fixed cylinder.
  • the conventional rotary piston pump of axial type with fixed cylinder has been, for example, so constructed as a plurality of cylinders are arranged symmetrically around the driving shaft, to which the disk inclined with predetermined angle to the vertical plane to said shaft is anchored coaxially, the outer ends of piston rods or plungers fitting in said cylinders being contacted closely with the correspondig side of said inclined disk, whereby the plungers or pistons repeat reciprocation through the inclined disk with the rotation of the driving shaft, resulting in alternative operation of the suction valves and delivery valves both set in the cylinders (cf., e.g., Handbook of Hydraulic Mechanical Engineering, Revised Edition, pages 443-447, published by Corona Publishing Co., Ltd., on February 20, 1972).
  • the conventional apparatus as above has advantages that it can be designed compactly and that it may be applied to high pressure system with good efficiency, however, it has, on the other hand, such disadvantages that strict accuracy is required in sliding faces and in sealing parts included in the apparatus and further that the operating fluids of low lubricity such as water and the like cannot be applied thereto.
  • the present invention resides in the rotary piston pump of axial type with fixed cylinder, wherein a plurality of cylinders are arranged symmetrically around and in parallel with the driving shaft or its production the pistons or plungers fitted in which cylinders repeat reciprocation with rotation of the driving shaft so as the fluid suction valves and delivery valves in the cylinders to operate alternatively, characterized in that to the driving shaft is anchored coaxially the flywheel of rotary drum shape, on the circular side of which flywheel is engraved one continuous oblique groove taking the form of one cycle sine curve on the development view of said circular side, while the outer ends of the piston rods of pistons or of plungers are connected with said oblique groove.
  • the flywheel of rotary drum shape is employed as main driving mechanism so that large scale apparatus may be designed. Further, according to the apparatus of the invention, it is able to design apparatus with a few sliding faces in its parts. Moreover, in the apparatus, besides oil, the operating fluids having low lubricity, e.g., water and the like, may also be applied thereto.
  • FIGS.1 and 2 illustrates vertical section view of preferred embodiment of the apparatus according to the present invention, which view includes the axes of the corresponding piston rod and driving shaft and in which the oblique groove of the flywheel appears at the end of circular side of said wheel (providing that the oblique groove is simply shown straight in the lengthwise direction).
  • FIGS.3 and 4 illustrate perspective views of the flywheels of the apparatus in FIGS.1 and 2, respectively.
  • FIG.5 illustrates a fragment of enlarged perspective view of the fixed shaft of the apparatus in FIG.1.
  • FIG.6 illustrates an enlarged perspective view of the connecting portion of the end grip of piston rod with the intermediate of lever of the apparatus in FIG.1.
  • FIG.7 illustrates an enlarged perspective view of the end grip of piston rod of the apparatus in FIG.2.
  • 1 shows driving shaft of the pump
  • 2 shows flywheel of rotary drum shape which is anchored to driving shaft 1 coaxially and which is so made as its left side is open while its circular side takes the form of an arc.
  • Inside the circle of flywheel 2 is engraved one continuous oblique groove 2a taking the form of, on the development view of such circular side, one cycle sine curve with the amplitude coming to the width in upper and lower directions of the same development view (cf. FIG.3), the inside of said oblique groove 2a taking the form of shallow rectangle on its vertical section.
  • 3 shows fixed shaft installed coaxially in flywheel 2, the right end of which shaft 3 is fitted rotatably, through bearings 4, in cylindrical bearing housing 2b having been fixed coaxially to flywheel 2.
  • Hinges 5, 5, .... are installed around the circular side of fixed shaft 3 symmetrically and radially so as each of them to be positioned in the rotation center of said circular arc of flywheel 2 (cf. FIG.5).
  • 6, 6, .... show cylinders arranged symmetrically around and in parallel with fixed shaft 3, and 7, 7, .... show pistons fitted rotatably in cylinders 6, 6, ....
  • 8, 8, .... show piston rods fixed to pistons 7, 7, .... , outer end grips 8a, 8a, .... of which piston rods 8, 8, .... are, as shown in FIG.6, formed so as to take U-shape (or forked shape), at said U-shape member being bored two opposite oval openings 8b, 8b.
  • levers 9, 9, .... are connected with said hinges 5, 5, .... respectively, the other ends of which levers 9, 9, .... are fitted in oblique groove 2a of flywheel by means of the rollers 10, 10, .... installed rotatably at said ends of levers through bearings being inserted in the same groove 2a in the form of roller bearing.
  • the intermediate of each lever 9 is placed inside the U-shape member of outer end grip 8a of piston rod, and the both projecting ends of minor roller 11 having been fitted rotatably in the corresponding portion of lever 9 through bearings are inserted loosely in openings 8b, 8b at the outer end grip of piston rod, whereby piston rod 8 is connected with lever 9.
  • 12 and 13 show frames which support cylinders 6, 6, ....
  • the both projecting ends of minor roller 11 of lever 9 reciprocate up-and-down motion within openings 8b, 8b, the amplitude of which motion refers to the width in upper and lower directions of the locus drawn by minor roller 11 travelling around the connecting point of lever 9 with corresponding hinge 5. That is, the length in upper and lower directions of said openings 8b, 8b is made to be longer than the width in upper and lower directions of travelling locus of minor roller 11.
  • piston 7 fixed to piston rod 8 moves, in the routine manner, to left or right, namely, from its upper dead point to lower dead point, and vice versa, whereby the operating fluid is sucked from suction valve 17 and delivered from delivery valve 16 alternatively.
  • FIG.2 illustrates another preferred embodiment of the present invention, which differs from the apparatus in FIG.1 in the construction of flywheel as well as the connecting manner of the piston rods with the oblique groove on circular side of such flywheel. That is, in said FIG., 2' shows flywheel of rotary drum shape which takes the form of cylinder and outside the circle of which wheel 2' is engraved oblique groove (cf. FIG.4), while such circular openings as vertical to the axis of driving shaft 1 are bored, as shown in FIG.7, at outer end grips 8c, 8c, .... of piston rods 8, 8, .... , and the projecting ends of rollers 10', 10', ....
  • oblique grooves 2a and 2'a of flywheel 2 may, on their vertical section, further take the other forms than rectangle, with the proviso that roller 10 at the upper end of lever 9 or roller 10' at outer end grip 8c of piston rod 8 will take the forms capable of fitting therein in the form of roller bearing.
  • oblique groove 2'a is engraved outside the circle of flywheel 2', however, it may be engraved inside flywheel 2'.
  • flywheel 2' will be open in the same manner as in FIG.1 and each outer end grip 8c of piston rod 8 will be inserted through the open side (left side in FIG.) of flywheel 2' so as to fit the projecting end of roller 10', which has been installed rotatably in said grip 8c, into oblique groove 2'a inside flywheel 2'.
  • the embodiments of apparatus of the invention described in the above refer to the rotary pumps of double action type, however, those of single action type may readily be constructed by leaving out valve supporting plate 15 therefrom. Further, piston 7, 7, .... with piston rods 8, 8, .... may, of course, be replaced by plungers.
  • the driving force required and the output thereby in the apparatus of the present invention supposing the angle (9) formed between piston rod 8 and the tangent to the projection line of real (i.e., curved) oblique groove 2a or 2'a on the same vertical section of the apparatus as in FIGS.1 and 2 which includes the axes of piston rod 8 and driving shaft 1 and in which the oblique groove 2a or 2'a of flywheel 2 or 2' is represented at the end of circular side of said wheel 2 or 2', the driving force required and output depend theoretically on said angle ⁇ as well as the radius of flywheel 2. Generally, ⁇ will be suitably 70-80 degrees, while the radius of flywheel 2 may be selected appropriately to the scale of the apparatus.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Une pompe a piston rotatif du type axial a cylindre mobile comprend un arbre d'entrainement (1) sur lequel est monte coaxialement un volant du type a tambour (2 ou 2'), ledit volant ayant sur sa surface circonferentielle interne une rainure inclinee continue (2 ou 2') disposee de maniere a former un cycle d'une courbure sinuzoidale complete dans son developpement et des bielles de piston (8) connectees au piston (7) logees dans des cylindres (6), respectivement, lesdites bielles de piston etant chacune engagee a une extremite dans ladite rainure de maniere coulissante, de sorte que les pistons (7) ont un mouvement alternatif par rotation de l'arbre d'entrainement (1). Selon cette invention, un appareil surdimensionne peut etre fabrique et les surfaces de coulissement entre les parties mobiles peuvent etre considerablement reduites. De plus ce genre de pompe peut fonctionner avec un fluide de travail comme de l'eau au lieu de l'huile.
EP79900553A 1978-06-14 1980-01-29 Pompe à piston du type axial Expired EP0019633B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP7097378A JPS54163405A (en) 1978-06-14 1978-06-14 Axial gas*liquid pressure feeder
JP70973/78 1978-06-14
JP306779A JPS5596375A (en) 1979-01-17 1979-01-17 Axial type rotary piston pump
JP3067/79 1979-01-17

Publications (3)

Publication Number Publication Date
EP0019633A4 EP0019633A4 (fr) 1980-10-09
EP0019633A1 true EP0019633A1 (fr) 1980-12-10
EP0019633B1 EP0019633B1 (fr) 1982-12-15

Family

ID=26336560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79900553A Expired EP0019633B1 (fr) 1978-06-14 1980-01-29 Pompe à piston du type axial

Country Status (6)

Country Link
US (1) US4365940A (fr)
EP (1) EP0019633B1 (fr)
AU (1) AU536762B2 (fr)
CA (1) CA1156087A (fr)
DE (1) DE2964250D1 (fr)
WO (1) WO1980000096A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826046A (en) * 1987-03-11 1989-05-02 The Coca-Cola Company Multi-channel linear concentrate pump
US5228840A (en) * 1988-11-14 1993-07-20 Impact Mst Incorporated Positive displacement pumps
US5140864A (en) * 1990-06-06 1992-08-25 Creed Durwood L Friction independent continuously variable transmission
WO2006130837A2 (fr) * 2005-06-02 2006-12-07 Kmt Waterjet Systems, Inc. Pompe rotative haute pression
JP5956920B2 (ja) * 2012-12-14 2016-07-27 株式会社コガネイ 液体供給装置
US9670915B2 (en) * 2014-03-27 2017-06-06 Caterpillar Inc. SBS piston pump housing assembly
DE102016124048A1 (de) * 2016-12-12 2018-06-14 Kamat Gmbh & Co. Kg Axialkolbenpumpe mit großer Fördermenge bei geringer Drehzahl und Verwendung einer Kolbenpumpe in einer Windkraftanlage
WO2019038108A1 (fr) * 2017-08-23 2019-02-28 Koninklijke Philips N.V. Pompe alternative entraînée par une came cylindrique

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US643918A (en) * 1899-04-26 1900-02-20 John J Howard Air-compressor.
US1521364A (en) * 1922-11-23 1924-12-30 Frederick C Froelich Air pump
US1661582A (en) * 1925-06-23 1928-03-06 Szydlowski Josef Piston engine
US2669185A (en) * 1951-08-20 1954-02-16 Birmingham Tool & Gauge Compan Hydraulic impeller or pump
US3323461A (en) * 1965-01-21 1967-06-06 Richard A Bennett Metering pump
FR1562381A (fr) * 1967-04-28 1969-04-04
US3663226A (en) * 1969-04-22 1972-05-16 Arnold E Biermann Variable piston-stroke mechanisms
JPS4849002A (fr) * 1971-10-22 1973-07-11
JPS5739586Y2 (fr) * 1972-05-09 1982-08-31

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8000096A1 *

Also Published As

Publication number Publication date
US4365940A (en) 1982-12-28
WO1980000096A1 (fr) 1980-01-24
AU4797679A (en) 1979-12-20
CA1156087A (fr) 1983-11-01
EP0019633A4 (fr) 1980-10-09
AU536762B2 (en) 1984-05-24
EP0019633B1 (fr) 1982-12-15
DE2964250D1 (en) 1983-01-20

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